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A new species of Ancistrus (Siluriformes: Loricariidae) from Tapajós and Xingu basins, Brazil
- Source :
- Neotropical Ichthyology, Vol 20, Iss 1 (2022)
- Publication Year :
- 2022
- Publisher :
- Sociedade Brasileira de Ictiologia, 2022.
-
Abstract
- Abstract A new Ancistrus species is described from Tapajós and Xingu river basins. It is distinguished from its congeners by the singular body color pattern, consisting of dark vermiculated stripes almost all over the body, and also by combination of features as a narrow head, large internostril distance, and absence of rows of enlarged odontodes on the lateral plates. In addition, the new species is distinguished from congeners that inhabit the rio Tapajós basin by the presence of a fully-developed adipose fin (vs. adipose fin absent in Ancistrus parecis and A. tombador, and vestigial adipose fin or absent in A. krenakarore). It differs from A. ranunculus, also from the rio Xingu, by the color pattern, smaller body size, smaller gill opening, and narrower cleithral width. The new taxon adds a new record to the list of species shared among the Xingu and Tapajós basins.
- Subjects :
- Amazon
Brazilian Shield
Bristlenose pleco
Hypostominae
Taxonomy
Zoology
QL1-991
Subjects
Details
- Language :
- English
- ISSN :
- 19820224
- Volume :
- 20
- Issue :
- 1
- Database :
- Directory of Open Access Journals
- Journal :
- Neotropical Ichthyology
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.68186c146656410f9348c5cd0d676f3a
- Document Type :
- article
- Full Text :
- https://doi.org/10.1590/1982-0224-2021-0129